Jarrin I, Pantazis N, Gill JM, Geskus R, Perez-Hoyos S, Meyer L, Prins M, Touloumi G, Johnson A, Hamouda O, et al. Uptake of combination antiretroviral therapy and HIV disease progression according to geographical origin in seroconverters in Europe, Canada, and Australia. Clinical infectious diseases. 2011;54:111–118.